The word(s) "monotheism" appears 283 time(s) in 267 verse(s) in Quran in Mohsin Khan translation.

(171) Shall We treat those who believe (in the Oneness of Allah - Islamic monotheism) and do righteous good deeds as Mufsidun (those who associate partners in worship with Allah and commit crimes) on earth? Or shall We treat the Muttaqun (the pious - See V.2:2) as the Fujjar (criminals, disbelievers, the wicked)?

(172) "Except Your chosen slaves amongst them (i.e. faithful, obedient, true believers of Islamic monotheism)."

(173) Say (O Muhammad صلى الله عليه وسلم): "O My slaves who believe (in the Oneness of Allah - Islamic monotheism), be afraid of your Lord (Allah) and keep your duty to Him. Good is (the reward) for those who do good in this world, and Allah's earth is spacious (so if you cannot worship Allah at a place, then go to another)! Only those who are patient shall receive their reward in full, without reckoning. "

(174) Those who listen to the Word [good advice La ilaha illallah - (none has the right to be worshipped but Allah) and Islamic monotheism] and follow the best thereof (i.e. worship Allah Alone, repent to Him and avoid Taghut) those are (the ones) whom Allah has guided and those are men of understanding.

(175) Then, who does more wrong than one who utters a lie against Allah, and denies the truth [this Qur'an, the Prophet (Muhammad صلى الله عليه وسلم) and the Islamic monotheism] when it comes to him! Is there not in Hell an abode for the disbelievers?

(176) And he (Muhammad صلى الله عليه وسلم) who has brought the truth (this Qur'an and Islamic monotheism) and (those who) believed therein (i.e. the true believers of Islamic monotheism), those are Al-Muttaqun (the pious - See V.2:2).

(177) "And turn in repentance and in obedience with true Faith (Islamic monotheism) to your Lord and submit to Him (in Islam) before the torment comes upon you, (and) then you will not be helped.

(178) And the man who believed said: "O my people! Follow me, I will guide you to the way of right conduct [i.e. guide you to Allah's religion of Islamic monotheism with which Musa (Moses) has been sent].

(179) Verily, We will indeed make victorious Our Messengers and those who believe (in the Oneness of Allah - Islamic monotheism) in this world's life and on the Day when the witnesses will stand forth, (i.e. Day of Resurrection) -

(180) And not equal are the blind and those who see; nor are (equal) those who believe (in the Oneness of Allah - Islamic monotheism), and do righteous good deeds, and those who do evil. Little do you remember!